971549495523 has 32 divisors (see below), whose sum is σ = 1444098240000. Its totient is φ = 645558523488.

The previous prime is 971549495471. The next prime is 971549495617. The reversal of 971549495523 is 325594945179.

971549495523 is a `hidden beast` number, since 9 + 7 + 1 + 5 + 494 + 95 + 52 + 3 = 666.

971549495523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 971549495523 - 2⁹ = 971549495011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (971549495123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10367986 + ... + 10461272.

It is an arithmetic number, because the mean of its divisors is an integer number (45128070000).

Almost surely, 2^971549495523 is an apocalyptic number.

971549495523 is a deficient number, since it is larger than the sum of its proper divisors (472548744477).

971549495523 is a wasteful number, since it uses less digits than its factorization.

971549495523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94568 (or 94562 counting only the distinct ones).

The product of its digits is 61236000, while the sum is 63.

The spelling of 971549495523 in words is "nine hundred seventy-one billion, five hundred forty-nine million, four hundred ninety-five thousand, five hundred twenty-three".